1) Sedimentary rock with grains of minerals and organic matter in layers a) Granite b) obsidian c) Pumice d) Sandstone 2) Igneous rock that forms when molten rock cools under the ground a) obsidian b) marble c) Granite d) Slate 3) Soft, white sedimentary rock a) marble b) Chalk c) Pumice d) Slate 4) Grey metamorphic rock that's formed when mudstone is squashed. Splits easily a) Slate b) andesite c) Chalk d) rock 5) Light, floating igneous rock formed by volcanos a) Pumice b) Chalk c) coal d) Slate 6) Black, volcanic igneous glass a) marble b) Sandstone c) obsidian d) Granite 7) Normally grey igneous rock found in volcanos and between the earths tectonic plates a) andesite b) obsidian c) Chalk d) Granite 8) Hard metamorphic rock that can be smoothed and has a beautiful look a) Granite b) marble c) Chalk d) Sandstone 9) Black sedimentary rock that can be burned for fuel a) rock b) coal c) Granite d) Chalk 10) Not really a rock... but tasty! a) obsidian b) rock c) coal d) Slate

Rocks quiz

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